diff --git a/include/rapidjson/reader.h b/include/rapidjson/reader.h
index 226c9d1..c06a4fc 100644
--- a/include/rapidjson/reader.h
+++ b/include/rapidjson/reader.h
@@ -148,6 +148,7 @@ enum ParseFlag {
     kParseStopWhenDoneFlag = 8,     //!< After parsing a complete JSON root from stream, stop further processing the rest of stream. When this flag is used, parser will not generate kParseErrorDocumentRootNotSingular error.
     kParseFullPrecisionFlag = 16,   //!< Parse number in full precision (but slower).
     kParseCommentsFlag = 32,        //!< Allow one-line (//) and multi-line (/**/) comments.
+    kParseNumbersAsStringsFlag = 64,    //!< Parse all numbers (ints/doubles) as strings.
     kParseDefaultFlags = RAPIDJSON_PARSE_DEFAULT_FLAGS  //!< Default parse flags. Can be customized by defining RAPIDJSON_PARSE_DEFAULT_FLAGS
 };